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Chapter 3.2 vocab
Chapter 4 vocab
| Term | Definition |
|---|---|
| passive transport | movement of molecules across the cell membrane without energy input form the cell |
| diffusion | movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration |
| concentration gradient | difference in the concentration of a substance from one location to another |
| osmosis | diffusion of water molecules across a semipermeable membrane from an area of higher water concentration to an areas of lower water concentration |
| isotonic | solution that has an equal concentration of dissolved particles compared with another solution |
| hypertonic | solution that has a higher concentration of dissolved particles compared with another solution |
| hypotonic | solution that has a lower concentration of dissolved particles compared with another solution |
| facilitated diffusion | diffusion of molecules assisted by protein channels that pierce a cell membrane (ex. of passive transport) |
| active transport | energy-requiring movement of molecules across a membrane from a region of lower concentration to a region of higher concentration |
| endocytosis | uptake of liquids or large molecules into a cell by inward folding of the cell membrane |
| phagocytosis | uptake of a solid particle into a cell by engulfing the particle |
| exocytosis | release of substances out of a cell by the fusion of a vesicle with the membrane |
Created by:
rmve123
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